ST. LOUIS – Drivers on northbound Interstate 55 in Jefferson County should give themselves extra time when traveling this weekend. One lane on northbound I-55 will be closed at Route A starting on Friday, June 23 at 1 p.m. until Monday, June 26 at 5 a.m.

Drivers are encouraged to use the zipper merge when traveling through the lane closure by filling up both lanes of traffic and then taking turns merging just before the closure point. This will actually make traffic flow better and decrease merging dangers.